Mass flowmeter certified for hydrogen filling stations
This company has developed the TMU-W 004 mass flowmeter (photo), which ensures precise metering despite pressure and temperature fluctuations. The device is said to be the first of its kind certified to international standard OIML R 139 2018, and thus approved for H 2 filling stations. A robust, slender housing protects specially arranged sensors and measuring loops that use the Coriolis effect and enable very precise flow measurement. The attached transducer converts the sensor signals into a reading that can be used to further analyze the flowrate. At the same time, the meter measures the temperature of the medium. The TMU-W 004 is suitable for high-pressure applications up to 1,000 bars. The meter ensures that during filling, the amount of hydrogen transferred to the vehicle tank is measured accurately. This enables correct billing of the amount filled, which is a prerequisite for fueling at public H 2 filling stations. It covers a measurement range of 0.133 to 4 kg/min of H2. — Heinrichs Messtechnik GmbH, Cologne, Germany